CN210984840U - Integrated negative pressure cup - Google Patents
Integrated negative pressure cup Download PDFInfo
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- CN210984840U CN210984840U CN201921739132.0U CN201921739132U CN210984840U CN 210984840 U CN210984840 U CN 210984840U CN 201921739132 U CN201921739132 U CN 201921739132U CN 210984840 U CN210984840 U CN 210984840U
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- annular
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- negative pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to the field of battery formation equipment, in particular to an integrated negative pressure cup, wherein the air tightness of the two side walls of an annular lug is embedded in an annular groove to form tooth connection and first heavy air tightness connection; meanwhile, the sealing element is arranged in the gap in an airtight manner, so that secondary airtightness is formed, and double sealing is finally realized, so that the direct airtightness of the cup body and the cup cover is improved. Because under the condition that the diameter of inscribing circle equals, square volume is greater than circular, consequently, the utility model discloses bowl cover and cup all are square, can enlarge the volume.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a battery ization becomes equipment field, especially an integral type negative pressure cup.
[ background of the invention ]
The negative pressure cup is an auxiliary device in the formation process, redundant gas is generated in the hard shell lithium battery in the negative pressure formation process, and the redundant gas is generally exhausted by the negative pressure cup in the prior art. The principle is as follows: the air pipe on the top of the negative pressure cup forms vacuum to draw out air in the battery, electrolyte in the battery can be drawn out while the vacuum is drawn out, part of electrolyte is stored in the negative pressure cup, and after negative pressure formation is completed, the electrolyte is pumped back into the battery under the action of trace positive pressure, so that the problem that the electrolyte injection amount in the battery is insufficient to cause the battery to be poor after the electrolyte in the battery is drawn out is avoided.
There are chinese utility model patent application nos: 201821031039.X, publication No. CN208596735U, discloses an integral negative pressure cup's patent technology, its advantage is: the sealing performance is good, the plastic is molded in an integrated mode, and the qualification rate is high. However, the patent technology has the following defects:
(1) the sealing performance of the negative pressure cup is better as the negative pressure cup needs to be vacuumized in the using process, and the welding part of the cup body and the cup cover of the negative pressure cup is only designed to be in tooth connection, so that the sealing performance is not high in actual production and needs to be further optimized;
(2) the cup body is designed to be circular, the capacity is small, and as the electrolyte can be slowly solidified in the negative pressure cup in the using process of the negative pressure cup to form solids, when the solids are slowly accumulated, the interior of the negative pressure cup is finally blocked, so that the negative pressure cup is scrapped, and therefore the quantity of the solids contained in the negative pressure cup is small due to the small capacity, and the service life of the negative pressure cup is relatively short;
(3) the connecting part of the bottom guide rod and the cup body is in right-angle connection, and a part of plane position is reserved, so that electrolyte solid is easily formed due to repeated use, and the guide rod is blocked;
(4) the connecting part of the bottom guide rod and the guide block is designed into a cylindrical shape, so that the rotation is easily caused by the vibration of a machine in the use process, the wiring of a top air pipe is influenced, and when the rotary displacement is overlarge, the vacuumized external air pipe is twisted, so that the air pipe is held, the vacuuming effect is poor, and the quality of a battery is influenced; on the other hand, the rotation can also cause the joint of the guide rod and the cup body to be twisted, so that a gap is generated, and the sealing performance is influenced.
[ Utility model ] content
In order to overcome the defects of the existing equipment, the utility model provides an integrated negative pressure cup, the connecting part of the cup body and the cup cover is designed into an annular lug and an annular groove, and a sealing ring is added in the annular groove, thereby realizing double sealing and improving the sealing performance of the cup cover and the cup body; meanwhile, the cup body and the cup cover are both designed to be square, so that the internal volume is enlarged.
The utility model discloses a realize like this: an integrated negative pressure cup comprises
The cup cover is square; the top surface of the cup cover is also provided with an air pipe joint mounting through hole; the bottom surface of the cup cover is also provided with an annular bump;
the air pipe joint is embedded in the air pipe joint mounting through hole in an air-tight manner;
the cup body is square; the bottom end of the cup body is provided with a funnel part with an open bottom end; the top surface of the cup body is provided with an annular groove, two side walls of the annular bump are embedded in the annular groove in an airtight manner, and a gap is formed between the bottom surface of the annular groove and the bottom end surface of the annular bump;
a seal hermetically mounted within the gap;
the guide rod is internally provided with a channel with the upper end and the lower end being open; the top of the guide rod is connected with the bottom opening of the funnel part in an airtight manner, and the channel, the inner cavity of the cup body and the air pipe joint are communicated.
Further, the bottom end opening of the funnel part is provided with a first chamfer;
the upper end opening of the channel is provided with a second chamfer; the second chamfer and the first chamfer are in smooth transition.
Furthermore, a plurality of first annular embedding blocks are arranged on the outer side wall of the top of the guide rod, and a first annular clamping groove is formed between every two adjacent first annular embedding blocks;
a plurality of second annular clamping grooves are formed in the opening at the bottom end of the funnel part, and a second annular embedded block is arranged between every two adjacent second annular clamping grooves;
the first annular embedding blocks are embedded into the second annular clamping grooves in a one-to-one corresponding air-tight manner;
the second annular embedding blocks are embedded into the first annular clamping grooves in a one-to-one correspondence and airtight mode.
Further, the first annular insert block is of a circular ring type; the second annular clamping groove is of an annular shape.
Furthermore, the device also comprises a guide block; the guide block is provided with a guide hole;
the guide rod is also provided with a stop block at the bottom end of the funnel part; the guide rod is positioned below the stop block and is provided with a first embedded part; the shape of the first embedding part is the same as the shape and the size of the guide hole, and the length of the first embedding part is larger than the depth of the guide hole;
the first scarf joint portion is embedded into the guide hole, the bottom end of the first scarf joint portion penetrates through the guide hole, and meanwhile the bottom surface of the stop block is attached to the top surface of the guide block.
Furthermore, the shape of the guide hole is that the left side and the right side are symmetrical circular arcs; the front and back sides are parallel line segments.
Further, the device also comprises a spring and a spring limiting piece;
the guide rod is positioned at the bottom end of the first embedded part and is also provided with a second embedded part;
the spring is sleeved on the first embedded part, and the top end of the spring abuts against the bottom end of the guide block;
the spring limiting part is fixedly nested on the second embedding part, and the bottom end of the spring abuts against the spring limiting part.
Further, the sealing element is an O-shaped sealing ring.
Further, the cross sections of the annular convex block and the annular groove are respectively trapezoidal.
The utility model has the advantages that:
(1) the two side walls of the annular bump are in air-tight scarf joint in the annular groove to form tooth connection and form first airtight connection; meanwhile, the sealing element is arranged in the gap in an airtight manner, so that secondary airtightness is formed, and double sealing is finally realized, so that the direct airtightness of the cup body and the cup cover is improved.
(2) Because under the condition that the diameter of inscribing circle equals, square volume is greater than circular, consequently, the utility model discloses bowl cover and cup all are square, can enlarge the volume.
[ description of the drawings ]
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a perspective view of the integrated negative pressure cup of the present invention.
Fig. 2 is a partial cross-sectional view of the air pipe joint, the cup cover, the cup body, the funnel part and the guide rod of the present invention.
Fig. 3 is a partial cross-sectional view of the air pipe joint, the cup cover and the cup body of the present invention.
Fig. 4 is a partially enlarged schematic view of a in fig. 3.
Fig. 5 is a partial sectional view of the cup body, funnel portion, and guide rod of the present invention.
Fig. 6 is a partially enlarged view of B in fig. 5.
Fig. 7 is a top view of the guide block of the present invention.
Fig. 8 is a first embodiment of the cross-sectional view C-C of the open connection of the guide rod and the bottom end of the funnel part according to the present invention.
Fig. 9 is a schematic view of a usage state of the integrated negative pressure cup of the present invention.
Description of reference numerals: the utility model discloses an integrated negative pressure cup 100;
a gas pipe joint 1;
the cup cover 2, the air pipe joint installation through hole 21 and the annular bump 22;
the cup body 3, the funnel part 31, a first chamfer 311, a second annular clamping groove 312, a second annular embedding block 313, an annular groove 32 and a gap 321;
a seal 6;
a spring 7;
a spring limit 8;
a probe unit 200;
a vacuum gas circuit 300;
a support plate 400;
the battery cell 500.
[ detailed description ] embodiments
Referring to fig. 1 to 9, the present invention provides an integrated negative pressure cup 100, which comprises
The cup cover 2 is square; the top surface of the cup cover 2 is also provided with a gas pipe joint installation through hole 21; the bottom surface of the cup cover 2 is also provided with an annular bump 22;
the air pipe joint 1 is embedded in the air pipe joint installation through hole 21 in an air-tight mode;
the cup body 3 is square; the bottom end of the cup body 3 is provided with a funnel part 31 with an open bottom end; the top surface of the cup body 3 is provided with an annular groove 32, two side walls of the annular bump 22 are embedded in the annular groove 32 in an airtight manner, and a gap 321 is formed between the bottom surface of the annular groove 32 and the bottom end surface of the annular bump 22; the cup cover 2 and the cup body 3 are mutually embedded and connected through the annular convex block 22 and the annular groove 32, namely, the cup cover is designed into a tooth shape and serves as a first heavy seal.
A sealing member 6, the sealing member 6 being airtightly fitted in the gap 321; the seal 6 acts as a secondary seal. Thereby realizing double sealing and improving the sealing performance.
The guide rod 5 is internally provided with a channel 51 with the upper end and the lower end being open; the top of the guide rod 5 is connected with the bottom opening of the funnel part 31 in an airtight manner, and the channel 51, the inner cavity of the cup body 3 and the air pipe joint 1 are communicated.
Although known by common general knowledge, under the condition of the same girth, the flow of circular cross section is greater than squarely, but the utility model discloses an externally mounted space has the restriction, in the time of in-service use, integral type negative pressure cup 100's externally mounted space limited, and for square or approximate square, because under the condition that the diameter of inscribing circle equals again, square volume is greater than circular, consequently, the bowl cover and cup all are squarely, can enlarge the volume to can improve the inside cavity of cup and hold the quantity of the cubic after electrolyte solidifies, thereby prolong the time of jam, realize integral type negative pressure cup 100's life's extension.
The bottom end of the funnel part 31 is open and provided with a first chamfer 311;
the upper end of the channel 51 is open and is provided with a second chamfer 511; the second chamfer 511 and the first chamfer 311 are smooth transitions. The channel 51 is used for the circulation of gas and electrolyte generated by the formation process. Guide arm 5 and cup 3 link up the part design to first chamfer 311 and second chamfer 511 smooth transition form a toper, receives the influence of gravity, and electrolyte is from this linking position landing downwards more easily to make electrolyte here remaining probability and quantity greatly reduced, thereby slowed down the jam condition, compared in prior art and had the platform at linking the position, the utility model discloses reduced and remained the electrolyte that links up the position, slowed down the jam at linking the position, thereby extension negative pressure cup life. In a specific embodiment, the channel 51 is located at the center of the guide rod.
A plurality of first annular embedding blocks 52 are arranged on the outer side wall of the top of the guide rod 5, and a first annular clamping groove 53 is formed between every two adjacent first annular embedding blocks 52;
a plurality of second annular clamping grooves 312 are formed in the opening at the bottom end of the funnel part 31, and a second annular embedding block 313 is arranged between every two adjacent second annular clamping grooves 312;
the first ring-shaped embedding blocks 52 are embedded into the second ring-shaped clamping grooves 312 in a one-to-one air-tight manner;
the second ring-shaped inserts 313 are hermetically inserted into the first ring-shaped slots 53 one by one.
The connecting part of the guide rod 5 and the funnel part 31 is designed into a structure that the embedded block and the clamping groove are mutually embedded, namely, the structure is designed into a tooth structure, firstly, compared with the mutual laminating of smooth cylindrical surfaces, the utility model increases the firmness degree of connection; secondly, the air tightness is increased.
The first ring insert 52 and the second ring slot 312 are engaged with each other, and may have a regular ring shape or an irregular ring shape.
In a specific embodiment: as shown in fig. 8, the first annular insert 52 is of the annular type; the second ring-shaped slot 312 is circular.
Also comprises a guide block 4; the guide block 4 is provided with a guide hole 41; the guide block 4 guides left and right, and is convenient for the integral negative pressure cup 100 to move up and down in the actual use process.
The guide rod 5 is also provided with a stop block 54 at the bottom end of the funnel part 31; the guide rod 5 is positioned below the stop block 54 and is provided with a first embedded part 55; the first hooking part 55 has the same shape and size as the guide hole 41, and the length of the first hooking part 55 is greater than the depth of the guide hole 41 so that the first hooking part 55 can penetrate the guide hole 41;
the first engagement portion 55 is engaged with the guide hole 41, and the bottom end of the first engagement portion penetrates through the guide hole 41, while the bottom surface of the stopper 54 is engaged with the top surface of the guide block 4.
The shape of the guide hole 41 is that the left side and the right side are symmetrical arcs 411; the front and rear sides are parallel line segments 412, that is, the shape of the engagement portion 55 is also: the left side and the right side are symmetrical arcs; the front side and the rear side are parallel line segments, so that the mutual limiting effect is achieved, the guide rod 5 can be prevented from rotating in the guide hole 41, the air pipe cannot be held back due to the rotation of the guide rod, and the vacuumizing effect is finally guaranteed. The effect of this design is: avoid guide arm 5 to slide in guide block 4 to in the formation technology, avoid because frequent plug when electric core, appear leading to guide arm 5 to take place rotatoryly for guide block 4 for the appearance is the cylinder, or guide arm 5 drives whole cup 3 and takes place the rotatory situation.
The device also comprises a spring 7 and a spring limiting piece 8; the spring 7 plays a role of buffering when the integrated negative pressure cup 100 moves downwards in use and plays a role of resetting when the integrated negative pressure cup moves upwards. The spring limiting piece 8 limits the spring 7 and supports the spring 7.
The guide rod 5 is also provided with a second embedded part 56 at the bottom end of the first embedded part 55;
the spring 7 is sleeved on the first embedded part 55, and the top end of the spring 7 props against the bottom end of the guide block 4;
the spring limiting part 8 is fixedly nested on the second embedding part 56, and the bottom end of the spring 7 abuts against the spring limiting part 8. The outer diameter of the second caulking portion 56 is smaller than that of the first caulking portion 55, thereby facilitating the installation of the spring 7. In a preferred embodiment, an annular process groove is formed at a connecting portion of the second engagement portion 56 and the first engagement portion 55, so that the processing and manufacturing are facilitated, and the precision is improved.
In a specific implementation, the spring retainer 8 may be a nut, and the outer surface of the second engagement portion 56 is threaded and fixed by a screw. In other embodiments, the spring stopper 8 and the second engagement portion 56 may not be fixedly connected by a screw thread, and after the spring is installed, the spring stopper 8 and the second engagement portion 56 are fixedly connected by welding.
The sealing element 6 is an O-shaped sealing ring 6.
The cross sections of the annular projection 22 and the annular groove 32 are respectively trapezoidal.
The utility model discloses a concrete one mode of making:
the air pipe joint 1 and the cup cover 2, the cup body 3 and the guide rod 5 are all formed by integral injection molding. Firstly, the air pipe joint 1 and the guide rod 5 are made of stainless steel materials, after the air pipe joint 1 and the guide rod are cast and formed, the guide rod 5 and the air pipe joint 1 are respectively placed into the cup body 3 and the cup cover 2 which are in injection molding, the cup cover 2 and the cup body 3 are made of polycarbonate materials, and after solidification, the air pipe joint is obtained. Finally, the cup cover 2 and the cup body 3 are welded into a whole, the cup cover 2 and the cup body 3 are designed into a tooth shape, a gap 321 is reserved below the cup cover 2 and the cup body 3 for improving the sealing performance, and an O-shaped sealing ring 6 is placed in the gap 321; and the cup cover 2 and the cup body 3 are welded into a whole by adopting the existing ultrasonic welding, so that the sealing performance is improved maximally.
As shown in fig. 9, the use method: integral type negative pressure cup 100 for becoming that the negative pressure process is used, install inside becoming the needle bed, according to electric core 500 quantity with guide block 4 fixed to the needle bed on, integral type negative pressure cup 100 can be in guide block 4 up-and-down motion. The vacuum circuit 300 is installed on the support plate 400; a negative pressure cup accommodating groove is formed between the probe unit 200 and the support plate 400, and the battery cell 500 is located at the bottom of the probe unit 200. When the negative pressure type negative pressure cup is used, the needle bed is driven by the cylinder to press down, the guide rod 5 below the integrated negative pressure cup 100 is opposite to the liquid storage port of the battery, the needle bed continues to press down, the guide rod 5 is inserted into the liquid storage port, the spring 7 on the guide rod 5 is in a compression state, at the moment, redundant gas in the port is pumped out through the passage 51 by utilizing the negative pressure principle, the redundant gas enters the inner cavity of the cup body 3 and is then discharged through the air passage of the air pipe joint 1, and electrolyte flows into the port again after the gas is discharged. Finally, the needle bed is lifted, and the guide rod 5 is pulled out from the liquid storage port.
Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.
Claims (9)
1. An integral type negative pressure cup which characterized in that: comprises that
The cup cover is square; the top surface of the cup cover is also provided with an air pipe joint mounting through hole; the bottom surface of the cup cover is also provided with an annular bump;
the air pipe joint is embedded in the air pipe joint mounting through hole in an air-tight manner;
the cup body is square; the bottom end of the cup body is provided with a funnel part with an open bottom end; the top surface of the cup body is provided with an annular groove, two side walls of the annular bump are embedded in the annular groove in an airtight manner, and a gap is formed between the bottom surface of the annular groove and the bottom end surface of the annular bump;
a seal hermetically mounted within the gap;
the guide rod is internally provided with a channel with the upper end and the lower end being open; the top of the guide rod is connected with the bottom opening of the funnel part in an airtight manner, and the channel, the inner cavity of the cup body and the air pipe joint are communicated.
2. The integrated negative pressure cup of claim 1, wherein: the bottom end opening of the funnel part is provided with a first chamfer;
the upper end opening of the channel is provided with a second chamfer; the second chamfer and the first chamfer are in smooth transition.
3. The integrated negative pressure cup of claim 1, wherein: the outer side wall of the top of the guide rod is provided with a plurality of first annular embedded blocks, and a first annular clamping groove is formed between every two adjacent first annular embedded blocks;
a plurality of second annular clamping grooves are formed in the opening at the bottom end of the funnel part, and a second annular embedded block is arranged between every two adjacent second annular clamping grooves;
the first annular embedding blocks are embedded into the second annular clamping grooves in a one-to-one corresponding air-tight manner;
the second annular embedding blocks are embedded into the first annular clamping grooves in a one-to-one correspondence and airtight mode.
4. The integrated negative pressure cup as claimed in claim 3, wherein: the first annular embedded block is of an annular shape; the second annular clamping groove is of an annular shape.
5. The integrated negative pressure cup of claim 1, wherein: the device also comprises a guide block; the guide block is provided with a guide hole;
the guide rod is also provided with a stop block at the bottom end of the funnel part; the guide rod is positioned below the stop block and is provided with a first embedded part; the shape of the first embedding part is the same as the shape and the size of the guide hole, and the length of the first embedding part is larger than the depth of the guide hole;
the first scarf joint portion is embedded into the guide hole, the bottom end of the first scarf joint portion penetrates through the guide hole, and meanwhile the bottom surface of the stop block is attached to the top surface of the guide block.
6. The integrated negative pressure cup as claimed in claim 5, wherein: the shape of the guide hole is that the left side and the right side are symmetrical circular arcs; the front and back sides are parallel line segments.
7. The integrated negative pressure cup as claimed in claim 5, wherein: the spring and the spring limiting piece are further included;
the guide rod is positioned at the bottom end of the first embedded part and is also provided with a second embedded part;
the spring is sleeved on the first embedded part, and the top end of the spring abuts against the bottom end of the guide block;
the spring limiting part is fixedly nested on the second embedding part, and the bottom end of the spring abuts against the spring limiting part.
8. The integrated negative pressure cup of claim 1, wherein: the sealing element is an O-shaped sealing ring.
9. The integrated negative pressure cup of claim 1, wherein: the cross sections of the annular convex block and the annular groove are respectively trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921739132.0U CN210984840U (en) | 2019-10-16 | 2019-10-16 | Integrated negative pressure cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921739132.0U CN210984840U (en) | 2019-10-16 | 2019-10-16 | Integrated negative pressure cup |
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| CN210984840U true CN210984840U (en) | 2020-07-10 |
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| CN201921739132.0U Active CN210984840U (en) | 2019-10-16 | 2019-10-16 | Integrated negative pressure cup |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061218A1 (en) * | 2021-10-11 | 2023-04-20 | 宁德时代新能源科技股份有限公司 | Gas discharge device for battery formation and formation system |
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2019
- 2019-10-16 CN CN201921739132.0U patent/CN210984840U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061218A1 (en) * | 2021-10-11 | 2023-04-20 | 宁德时代新能源科技股份有限公司 | Gas discharge device for battery formation and formation system |
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